#include <iostream>

using namespace std;

class Base
{
public:
	void func(double a, double b)
	{
		cout << "a" << " " << "b" << endl;
	}
};

class Derive : public Base
{
public:
	void func(int c, int d)
	{
		cout << "c d" << endl;
	}
};

int main()
{
	Derive d;
	d.func(1.5, 2.4);

	return 0;
}